"If you're not interested in the company or the field, you should still send a quick thank you. An email will suffice," says Crawford. "But if you are interested, then your tone and the frequency of your follow up will change. Send an email first, but I really like handwritten notes, also. Be sure to say that you want to stay in touch, and ask them what's the best way to do that."
The frequency with how often you make contact has to do with where you are in a job hunt. "If you're in the throes of a job search, you might want to touch base once a week. But if you're in career exploration mode, then you could touch base once a month. You want to find a good balance ... there's a fine line between following up and being a stalker."
"If you treat people with care you will develop good, trusting, long-lasting relationships," Kay adds. "And then even if they can't help you, they'll probably refer you to someone."